Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US455416A Inventor Alfred L W Williams Walter J Brown Current Assignee (The listed assignees may be inaccurate.
Google Patents US2439499A - Piezoelectric motorÄownload PDF Info Publication number US2439499A US2439499A US455416A US45541642A US2439499A US 2439499 A US2439499 A US 2439499A US 455416 A US455416 A US 455416A US 45541642 A US45541642 A US 45541642A US 2439499 A US2439499 A US 2439499A Authority US United States Prior art keywords axis shaft sections elements piezoelectric Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.